Tube-number record
12AX7S
8 archive entries
BrandMazda Belvu
ClassDouble Triode
BaseNoval (B9A)
Filament12.6 V @ 150 mA
Construction
Primary TypeDual triode
EnvelopeA 22-2
Sections2
Filament / Heater
Heater NotesIndirect heating; series/parallel filament support
Absolute Maximum Ratings
Plate Voltage330 V
Plate Dissipation1.1 W
Grid 1 Voltage55 V
Cathode Current20 mA
H-C Voltage200 V
Audio Performance
Key Features
- Sécurité Cinq Etoiles
- Shock and vibration resistant
- Heater withstands 5,000 switching cycles
- Designed for aeronautical and industrial use
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operation - Triode Section | 100 V | 1250 | 80000 | 100 | 0.5 mA |
| Typical Operation - Triode Section | 250 V | 1600 | 62500 | 100 | 1.2 mA |
Datasheets
Datasheet: 12AX7S.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
Use the Left and Right Arrow keys to browse photos. Use Home for the first photo and End for the last photo.
Photo 1 of 3
12AX7S
- Brand
- Thomson Csf
Use the Left and Right Arrow keys to browse photos. Use Home for the first photo and End for the last photo.
Photo 1 of 3
12AX7S
- Maker
- Philips
- Brand
- Sel Lorenz
Use the Left and Right Arrow keys to browse photos. Use Home for the first photo and End for the last photo.
Photo 1 of 4
Use the Left and Right Arrow keys to browse photos. Use Home for the first photo and End for the last photo.
Photo 1 of 2
Use the Left and Right Arrow keys to browse photos. Use Home for the first photo and End for the last photo.
Photo 1 of 10
12AX7S, FSE-6741
- Brand
- CSF
Use the Left and Right Arrow keys to browse photos. Use Home for the first photo and End for the last photo.
Photo 1 of 8
Showing 1–8 of 8 results